I still have a lot to do in Odyssey, but I've spent enough time that I can safely say I dont see it beating either of the Galaxy games for me as my fav. Something about those games are just sheer perfection to me, and I prefer the galaxies over the sandbox worlds of Odyssey. I think it makes the game feel a bit more diverse and also plays more like a "level", which I like.

Galaxy is still my favorite at this time. Odyssey comes third, after 64. Odyssey's worlds feel too small (akin to 64's worlds but with 10 times the number of moons) and a lot of moons are just fillers. Back in the day it was such a challenge to get only one of the stars and it felt way more rewarding.